
    <nz-slider
      [nzDefaultValue]="30"
      [(ngModel)]="singleValue" (ngModelChange)="onChange($event)"
      (nzOnAfterChange)="onAfterChange($event)"
    ></nz-slider>
    <nz-slider
      nzRange
      [nzStep]="10"
      [nzDefaultValue]="[20, 50]"
      [(ngModel)]="rangeValue" (ngModelChange)="onChange($event)"
      (nzOnAfterChange)="onAfterChange($event)"
    ></nz-slider>
  